EP 3056922 A3 20160921 - VELOCITY AND ATTITUDE ESTIMATION USING AN INTERFEROMETRIC RADAR ALTIMETER
Title (en)
VELOCITY AND ATTITUDE ESTIMATION USING AN INTERFEROMETRIC RADAR ALTIMETER
Title (de)
GESCHWINDIGKEITS- UND LAGESCHÄTZUNG MITHILFE EINES INTERFERROMETRISCHEN RADARHÖHENMESSER
Title (fr)
ESTIMATION DE VITESSE ET D'ATTITUDE À L'AIDE D'UN ALTIMÈTRE RADAR INTERFÉROMÉTRIQUE
Publication
Application
Priority
- US 201562114694 P 20150211
- US 201514811059 A 20150728
Abstract (en)
[origin: EP3056922A2] A method and system for estimating velocity of an aircraft is provided. The method comprises transmitting a beam toward a surface from the aircraft using a Doppler beam sharpened radar altimeter, receiving a plurality of reflected signals that correspond to portions of the transmitted beam that are reflected by the surface, and forming a plurality of Doppler beams by filtering the received signals. A complex-valued array of range bin is computed with respect to frequency of the Doppler beams from at least one antenna aperture of the radar altimeter, and a range for each of the Doppler beams is estimated. A velocity vector magnitude for the aircraft is estimated by a curve fit of the range with respect to the frequency of the Doppler beams.
IPC 8 full level
G01S 13/58 (2006.01); G01S 13/60 (2006.01); G01S 13/88 (2006.01)
CPC (source: EP US)
G01S 13/4454 (2013.01 - US); G01S 13/585 (2013.01 - EP US); G01S 13/588 (2013.01 - EP US); G01S 13/60 (2013.01 - US); G01S 13/605 (2013.01 - EP US); G01S 13/882 (2013.01 - EP US); G01S 7/2883 (2021.05 - EP US)
Citation (search report)
- [A] US 7911375 B2 20110322 - WINSTEAD BENJAMIN J [US], et al
- [A] US 2004227658 A1 20041118 - VANDENBERG NORMAN [US]
- [A] KEITH RANEY: "The Delay/Doppler Radar Altimeter", IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 36, no. 5, 1 September 1998 (1998-09-01), XP011021108, ISSN: 0196-2892
- [A] HALIMI ABDERRAHIM ET AL: "A Semi-Analytical Model for Delay/Doppler Altimetry and Its Estimation Algorithm", IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 52, no. 7, 1 July 2014 (2014-07-01), pages 4248 - 4258, XP011541423, ISSN: 0196-2892, [retrieved on 20140227], DOI: 10.1109/TGRS.2013.2280595
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3056922 A2 20160817; EP 3056922 A3 20160921; EP 3056922 B1 20180509; KR 20160098985 A 20160819; US 10006991 B2 20180626; US 2018074187 A1 20180315
DOCDB simple family (application)
EP 16154354 A 20160204; KR 20160015601 A 20160211; US 201514811059 A 20150728